Car-coupling



2 SheetsShe t 1. H. MARSHAL.

GAB. COUPLING. I

Patented Aug. 5, 1890.

(No Model.)

(NO Mo 'H. MARSHAL.

GAR COUPLING.

No. 433,798. Patented Aug. 5, 1890.

I 3 fp 71 2121 T NMIHI mmmn lillllllililllli UNITED STATES PATENTOFFICE.

HENRY MARSHAL, OF LINCOLN, NEBRASKA.

CAR-COUPLING.

SPECIFICATION To all whom it may concern:

Be it known that I, HENRY MARSHAL, a citizen of the United States,residing at Lincoln, in the county of Lancaster and State of Nebraska,have invented a new and useful Oar- Coupling, of whichthe following is aspecification.

This invention relates to car couplings, more especially of that classknown as twin jaws; and the object of the invention is to improve theconstruction of devices of this general character heretofore existing.

To this end the invention consists of a drawhead, a jaw swinging on avertical pivot therein and having a foot extending into a-trans.

verse slot in the front end of the draw-head provided with an inclinedbottom,a p'in having a shoulder adapted to lock the foot, and hence thejaw, and certain details of construction, as of the devices forconnecting the draw-head with the car, all as hereinafter more fullydescribed, and illustrated in the drawings, in which Figure 1 is a planview of my improved draw-head and draw-bar detached from the car,showing the jaw as open or in uncoupled position. Fig. 2 is a transversesection on the line2 2 of Fig.1,showing the jaw as locked.

Fig. 3 is a similar section showing the pin as raised and held in raisedposition by the ball nd the jaw as ready to be turned to uncouple thecars. Fig. 4 is a front elevation showing the jaw as unlocked,the upperportion of the draw-head being broken away to show the correct positionsof the pin and ball, this view also showing the end of the car inoutline and the pin-raising devices attached thereto. Fig. 5 is a sideelevation of the draw-head from the jaw side with the jaw open. Figs. 6and 7 are detail perspective views of the pin and the jaw detached.

Referring to the said drawings, the letter H designates the draw-head;D, the draw-bar; P, the coupling-pin; J, the jaw; B, the ball; L, thepin-lifter; X, the draft-boxes; R, the connecting-rod, and S thebuffer-spring. The

construction and relative arrangement of these parts are as follows: Thedraw-head H is provided at its sides with ears E, over which are engageddraft-boxes X,which are retained in position upon said ears by suitablemeans,

. and has an inclined bottom i.

forming part of Letters Patent No. 433,798, dated August 5, 1890.Application filed May 13, 1890. Serial No. 351,593. (No model.)

asfastening-pins f, and through the rear ends of these boxes are passedthe front ends of connecting-rods R, which extend beneath the car-bodyand are connected with the drawhead at the other end of the car in thesame manner. The draw-bar D has a hole in its rear end in which isseated an extension-pin forming a guide G for the spring, and this guideis connected with the draw-bar by a pin 19, which passes verticallythrough them about as shown. Upon the guideG is mounted the bufferspring or springs S, which operate between plates g, sliding upon theguide G in the well-known manner.

The draw-head is about of the shape shown in the drawings, although itsrelative proportions of parts may be considerably varied withoutdeparting from the spirit of my invent-ion. It is provided with avertical hole through its center in which moves the coupling-pin P,hereinafter described. It has forward extensions it, between which ispivoted an outward extensionj of the jaw J, and it has a transverse slotT in its front end, which slot is enlarged on the interior of thedrawhea'd, is curved around the pivot of the jaw, The jawJ has a foot F,of the shape shown in Fig. 7, which foot projects rearwardly from thepivot j and moves within the slot T, as will be clearly understood. Themain portion or head of the jaw stands forward of the body of thedrawhead and opposite an inclined face I of the draw-head, whereby it isadapted to couple automatically, as is usual in car-couplings of thischaracter.

The pin P, which moves vertically through the hole in the draw-head inrear of the slot therein, has an enlarged lower end Z, and a rod or bar'L, which turns in eyes in the end of the car-body, has a bend at itscenter standing beneath this enlarged lower end of the pin, and hascranked outer ends, whereby the pin may be lifted from the sides of thecar. The lower end of the pin is smaller than the upper end, whereby ashoulder A is formed at about the center of its length, and thisshoulder rests upon the foot F, as shown in Fig. 4, when the jaw isopen., As soon as the latter is closed the pin falls by its own weightand the shoulder passes down by the Ice foot, as shown in Fig. 2,whereby the jaw is locked in this position. Vhen it is desired touncouple the car, the pin is raised and the ball B rolls down theinclined bottom t and passes under the shoulder A, whereby the pin issupported, as shown in Fig. 3. As soon as the cars are moved, toseparate them the two jaws J are turned, as will be readily under stoodand as is common in this class of carcouplers. This movement of the jawthrows its foot around in the slot T below the shoulder A of the pin,and pushes the ball B forward of it up the inclined bottom If of theslot. The thickness of the foot is slightly less than the diameter ofthe ball, whereby as soon as the ball has been pushed from beneath theshoulder A the pin falls a'trifle and rests and slides upon the upperface of the foot. The parts then assume the position shown in Figs. 1and 4.

When the device is to be coupled, the companion draw-head is forcedagainst the one illustrated, and as it approaches it strikes the thenfront edge of the foot F and turns the Same (and with it the head J) tothe locked position of the parts. As it turns, the foot slides below theshoulder A and the ball follows the foot until it strikes the side ofthe shoulder, when it can go no farther, because it is too large to passunder the shoulder. The foot continues to move until it clears theshoulder, when the pin drops and the parts assume the positions shown inFig. 2, the cars being then coupled together.

WVhat I claim is- 1. In a car-coupling, the combination, with thedraw-head having a slot in its front end, which is enlarged on theinterior of the drawhead and provided with an inclined bottom, of a pinmoving vertically through the drawhead and having a shoulder movingthrough the enlargement of said slot and a ball in said enlargement,substantially as described.

2. In a car-coupling, the'combination, with the draw-head having a slotin its front. end, which is enlarged on the interior of the drawhead andprovided with an inclined bottom, and the jaw pivoted in said drawheadand having a foot extending into said slot, the latter being struck on acurve around the pivot of the jaw, of a ball in said enlargement ofgreater diameter than the thickness of the foot, and a pin movingvertically through the d raw-head in rear of the enlargement and havinga shoulder extending into the enlargement, the whole adapted to-operatesubstantially as described.

3. In a car-coupling, the combination, with the draw-head, a jaw pivotedtherein and having a rearwardly-extending foot, and a pin having ashoulder adapted to drop in front of said foot, of an enlargement at thelower end ofsaid pin and a cranked rod mounted in eyes on the end of thecar-body and standing below said enlargement and at right anglesthereto, as and for the purpose set forth.

A. In a car-coupling, the combination, with the draw head havingperforated cars at its sides, of draft-boxes engaging said ears, pinspassing through the perforations therein and removably securing theboxes in place, and

rods connecting the boxes with those at the other end of the carbody,substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

HENRY MARSHAL. \Vitnesses:

Lori L. E. STEWART, R. L. STEWART.

